对痤疮瘢痕治疗无效的为
A．糖皮质激素局封
B．磨削术
C．激光
D．口服抗生素药物
E．美容手术
参考答案：D
They had a party _______ the evening of October l. [ ]
A. in
B. at
C. on
D. /
成年人椎骨为（）。
A、颈椎7个，胸椎12个，腰椎5个，骶骨1块，尾椎1块
B、颈椎7个，胸椎12个，腰椎5个，尾椎4-5个
C、颈椎8个，胸椎12个，腰椎5个，骶椎5个，尾椎1个
D、颈椎7个，胸椎12个，腰椎5个，骶椎5个，尾椎1个
